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Updated: May 27, 2025
Digital PCR for Quantifying Circulating MicroRNAs in Acute Myocardial Infarction and Cardiovascular Disease
Published on: July 3, 2018
Validation of novel exosomal miRNAs identified by next-generation sequencing in coronary artery disease
Sheng-Nan Chang1, Jien-Jiun Chen1, Meng-Tsun Liu1
1Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital Yunlin Branch, Douliu City, 640203, Taiwan.
Insights
Exosomal microRNA-382-3p is linked to severe coronary artery disease (CAD). This finding may aid in understanding CAD mechanisms and developing new therapies for this common cardiovascular condition.
Area of Science:
- Cardiovascular Research
- Molecular Biology
- Biomarker Discovery
Background:
- Coronary artery disease (CAD) is a major cause of death globally.
- Exosomal microRNAs (miRNAs) are implicated in atherosclerosis and CAD.
- Understanding exosomal miRNA roles in CAD is crucial for disease management.
Purpose of the Study:
- To validate associations between eight exosomal miRNAs and CAD.
- To assess the relevance of these miRNAs to CAD severity.
- To identify potential biomarkers for severe CAD.
Main Methods:
- Quantitative polymerase chain reaction (qPCR) was used to analyze exosomal miRNAs in 875 participants.
- Data from January 2022 to August 2023 were analyzed.
- Statistical analysis included the Wilcoxon rank-sum test (p < 0.05).
Main Results:
- miRNA-382-3p was significantly upregulated in severe CAD patients.
- Upregulation of miRNA-382-3p correlated with disease presence.
- Other miRNAs showed variable expression or low detection rates, limiting utility.
Conclusions:
- Exosomal miRNA-382-3p is associated with severe CAD.
- This miRNA may offer insights into CAD pathogenesis.
- Further research is needed to confirm its clinical significance and therapeutic potential.
Background:
Coronary artery disease (CAD) is a leading cause of cardiovascular morbidity and mortality. Exosomal microRNAs (miRNAs) play a role in vascular atherosclerosis and are involved in the pathophysiology of CAD. This study aimed to validate the associations of eight exosomal miRNAs with CAD and assess their relevance to disease severity.
Methods:
A total of 875 participants who underwent elective coronary angiography were enrolled between January 2022 and August 2023. Blood samples were collected during angiography, and exosomal miRNAs were analyzed using quantitative polymerase chain reaction (qPCR). Only miRNAs with detection rates above 50% and reproducible results were included. Differential expression was evaluated using the Wilcoxon rank-sum test (also known as the Mann-Whitney U test), with statistical significance set at p < 0.05.
Results:
Participants in the severe CAD group (with significant three-vessel disease) were older and had a higher incidence of hypertension than those in the non-CAD group (with patent coronary arteries). miRNA-382-3p was significantly upregulated in patients with severe CAD, correlating with the presence of disease. miRNA-3613-3p and miRNA-185-5p exhibited variable expression patterns, warranting further investigation. miRNA-200a-3p expression did not significantly differ between the groups, whereas miRNA-432-5p, miRNA-125a-5p, miRNA-151a-3p, and miRNA-328-3p had low detection rates, limiting their analytical utility.
Conclusion:
miRNA-382-3p is associated with severe CAD and may contribute to understanding disease mechanisms and therapeutic development. Further studies are necessary to validate its clinical significance and broader application.
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